9. (2)
Tangent is opposite over adjacent. Better, if the angle is at the origin (something like A = (0,0), B = (48,0), and C = (48,14)), then the tangent is the slope of the hypotenuse. You do probably want to sketch the triangle.

10. (1) (1, -4)
Plot each point, see which falls in the doubly-shaded region.